'Cursed' can be pronouced '/kɜːrst/' or '/ˈkɜːrsɪd/'. As far as I am aware, when used as the past tense of the verb 'to curse' it is always the former ('He stubbed his toe and cursed').

What's the difference between cursed and cursed?

As verbs the difference between curse and cursed

is that curse is to place a curse upon (a person or object) while cursed is (curse).

Is cursed one or two syllables?

"Cursed" as two syllables in poetry - English Language & Usage Stack Exchange.